Based on a tip from Zod, who is still posing as the Blur, Lois infiltrates one of Tess's secret labs and discovers she is experimenting with kryptonite. An explosion in the lab sends Lois down an elevator shaft, where she is saved by John Corben. Clark tracks down the lab Lois was investigating, where he is exposed to red kryptonite. Now without any inhibitions, Clark discovers that Chloe and Oliver have been stock piling kryptonite weapons, so he joins forces with Zod, who reveals that he has powers, to seek out and destroy all of them. Afterward, Clark takes Zod to the Fortress of Solitude. Chloe sends John to the Fortress to flush the red kryptonite out of Clark's system by stabbing him with a piece of green kryptonite. John is successful, and using Clark's octagonal key, he teleports himself back to Smallville. When Clark returns to normal he finds Zod has vanished. Later, Zod returns to the Fortress with his troops, using a kryptonite dagger to cut his hand and use his blood to give his troops all of his powers.